Ground Plane Filtering of Video Events

2. The method of claim 1, wherein each image of the first set of images includes a plurality of scene segments, each scene segment comprising a group of pixels in the image that correspond to the same object in the scene.

8. The method of claim 1, wherein identifying the subset of pixel groups that overlap with the surface comprises determining, for each of the plurality of pixel groups, that a percentage of the pixel group that has pixel locations corresponding to ground plane pixels in the first set of images satisfies a threshold percentage.

12. The method of claim 1, wherein the surface depicted in the scene comprises a walkable surface depicted in the scene.

13. The method of claim 1, wherein identifying the subset of pixel groups that overlap with the surface comprises determining, for each of the plurality of pixel groups, that a number of pixels of the pixel group that has pixel locations corresponding to ground plane pixels in the first set of images satisfies a threshold number of pixels.

14. The method of claim 1, wherein the surface is defined in part by a horizon in the scene.

15. The method of claim 1, wherein the surface depicted in the scene comprises a surface on which one or more objects appear to be positioned.

17. The system of claim 16, wherein each image of the first set of images includes a plurality of scene segments, each scene segment comprising a group of pixels in the image that correspond to the same object in the scene.